Heat-regulating means for incubators and the like.



J. F. MACKAY & G. W. CISCO.

HEAT REGULATING MEANS FOR INCUBATORS AND THE LIKE.

APPLICATION man NOV-3.19M.

1,292,343. Patented Jan. 21,1919.

fi f 4 leg ?-||H m|wIWI IWHIH]WNW/WW ITE STATES PAT NT oEEroE.

JOHN r. MAGK -QE BORDENTOWN, AND GEORGE w. oIsco, or HAWTHORNE, NEW

" JERSEY.

HEAT-REGULATING MEANS FOR INC UBATORS AND THE LIKE.

7 '0 all whom it may concern:

Be it known that we, JOHN F. MAoCAY and GEORGE W. OIsco, citizens of the United States, and residents, respectively, of Bordentown and Hawthorne, in the counties of Burlington and Passaic and State of New Jersey, have invented certain new and useful Improvements in Heat-Regulating Means for Incubators and the like, of which the following is a specification, reference being had therein to the accompanying drawing.

Our present invention relates to means for regulating automatically thetemperature of incubator and other chambers. The object is to provide a simple, eflicient, damper device, which will let in a greater or less amount of fresh air as is required. The invention, therefore, may be said to consist of certain details and peculiarities in the construction, arrangement and combination of parts, substantially as will be hereinafter set forth and then claimed.

In the accompanying drawing illustrating our invention:

Figure 1 is a vertical section of our improved draft-regulating device for incubators and the like taken on the line 1, 1, of Fig. 2.

Fig. 2 is a horizontal section of the same on line 2, 2, of Fig. 1.

Fig. 3 is a cross-section of an incubator compartment with my improved device applied thereto.

Similar characters of reference designate corresponding parts throughout the different figures of the drawings.

1 denotes a chamber or compartment of an incubator or any other kind of a hatchery. brooder or poultry-raising appliance, in which for example, there is an egg tray 2 having the usual ledge 2* around the edge thereof, and said chamber 1 having also a door 3 hinged at 4 to give access to the interior and to the tray for the eggs and new born chicks.

The air inlet or flue 5 is located in the chamber 1 having one end open and in communication with the atmosphere, and the other opening into the interior of the chamher 1. Said flue 5 may be supported or carried in any convenient way and through it the hot air may pass out as shown by the arrows in Fig. 3, and likewise fresh air Specification of Letters Patent.

Application filed November 3, 1917. Serial No. 200,158.

Patented Jan. 21, 1919.

from the atmosphere may be introduced through it into the chamber 1. This flue 5 is horizontal and the inner end thereof terminates near the upper midway portion of the incubator chamber. It is particularly advantageous in a device of this character to take out air from the top central point of the incubator where the air is the hottest, and this removal of air is most effectually accomplished by means of a horizontally disposed tube which prevents a too rapid How of the air that might occur in a vertically disposed tube. The advantage, therefore, of the horizontal flue arranged in the manner and having the function stated is important and valuable.

In chamber 1 is a thermostat 6 carried by bracket 7 attached to the flue 5 or otherwise supported, and said thermostat operates a lever 8 having a fulcrum 9. The outer end of the lever 8 is movably connected to a rod 11 which connects with a damper or valve 10 located within the flue 5 near the outer end thereof and adapted to be opened or closed so as to introduce more or less air from the outside and also to allow the outflow of air through the interior of chamber 1.

When the interior of chamber 1 becomes heated to a high degree the thermostat 6 will expand and thus open the valve 10 and allow the hot air to pass out so that the temperature of the interior of chamber 1 will be reduced. In this way the temperature can be kept uniform, for obviously as soon as it is below a predetermined degree the thermostat will act upon the lever 8 to again close or partially close the damper, so that the temperature will rise again. A uniform temperature is very desirable in an incubator chamber and by thus arranging a thermostat which will control a damper, we permit the exit of hot air and the entrance of cool air, so that the object in view is attained very easily.

Many minor changes in the relative arrangement of the various parts may be made without exceeding the scope of the claim.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is:

In a heat-regulating appliance for incubators, the combination with a main chamber, of a horizontal flue supported in the wall of said chamber and having theouter end and a system of levers between the damper open to the outer atmosphere and the inner and the thermostat. V

end opening freely into the interior of the In testimony whereof We hereunto aflix 10 chamber and terminating near the upper our signatures.

midway portion of the chamber, a thermov stat in the incubator chamber, a pivoted JOHN F. MAOKAY. damper in the flue near the outer opening, GEORGE W. CISCO.-

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

